Question

1) What do you mean by electric charge of an object?
2) What is the SI unit of charge?
3) Define one coulomb charge.
4) Write down the mathematical form of Coulomb's law in S.I system .
5) What is the SI unit of potential difference ?
6) Name a device that helps to measure the potential difference across a conductor.​

Answer 1

Question ❶ :

›»› What do you mean by electric charge of an object?

Answer :

›»› Electric charge is that the physical property of matter that causes it to expertise a force once placed in associate degree magnetic force field.

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Question ❷ :

›»› What is the SI unit of charge?

Answer :

›»› The SI unit of charge is Coulomb (C).

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Question ❸ :

›»› Define one coulomb charge.

Answer :

›»› The basic unit of electric charge, up to the number of charge transferred in one second by a gradual current of 1 ampere, and cherish half to 6.2415 × 10¹⁸ elementary charges.

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Question ❹ :

›»› Write down the mathematical form of Coulomb's law in S.I system.

Answer :

$\tt{\leadsto k\dfrac{q_{1}q_{2}}{r^2}}$

Where,

• k is the proportionality constant and equals to 1/4πε₀.
• The value of k comes 9 × 10⁹ Nm²/C².

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Question ❺ :

›»› What is the SI unit of potential difference ?

Answer :

›»› The SI unit of potential difference is Volt (V).

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Question ❻ :

›»› Name a device that helps to measure the potential difference across a conductor.

Answer :

››› Voltmeter is a device that helps to measure the potential difference across a conductor.

Answer 2

Answer:

⓵ What do you mean by electric charge of an object ?

Ans) Electric charge is the basic physical property of matter that causes it to experience of a force when kept in an electric or magnetic field.

⓶ What is the S.I unit of charge ?

Ans) Coulomb is the S.I unit of charge.

⓷ Define one coulomb charge ?

Ans) One coulomb is the amount of charge transferred in one second by a steady current of one ampere and equivalent to 6.415 × 10¹⁶ charges.

⓸ Write down the mathematical form of Couloumb's law in S.I unit ?

Ans) The mathematical form of Couloumb's law in S.I unit is :-

$\boxed{\bold{\large{F\: =\: k\dfrac{\sf{q_1} {q_2}}{r²}}}}$

where, k is a constant of proportionality known as electrostatic force constant or Couloumb's constant .

⓹ What is the S.I unit of potential difference ?

Ans) Volt denoted by 'V' is the S.I unit of potential difference.

⓺ Name a device that helps to measure the potential difference across a conductor ?

Ans) Voltmeter is a device that helps to measure the potential difference across a conductor .

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